@SimplyTadpole
It is my understanding you can’t adjust the clocks and voltages of amdgpu without unlocking it with a kernel parameter. I am in no way a gamer but from some reading It looks maybe like changing settings has no effect without unlocking. 
Maybe @keybreak has more info.
Unfortunately i don’t, one thing i can say from reading that thread - it’s definitely not normal 
No way in hell! 
Not really.
Additional fans might help. Getting a new cooler is still going to require a repaste. Re-pasting is not that hard, and quite frankly anyone who owns a gaming rig should get used to it. If yo uare hitting 90c it is likely a combination of the two.
I don’t know. I get really good performance out of the box with Fedora and have not needed to tweak my GPU.
Archlinux optimizes nothing. You the user need to set everything up the way you want it. Chalk it up to learning the Arch ecosystem and how things work. A lot of other distros have their own sane defaults. Arch generally defaults to whatever the package default is. You have to tweak it to get what you want. It is time consuming, but in the end you will have a sysem you completely understand.
You can adjust clocks and voltages pretty easily with this tool
No i don’t think it’s normal either. I’m not a gamer but i have an RX 590 and i know it’s probably slightly better than my Nvidia GTX 1060.
Gday
I have an Ryzen 3500X, stock AMD cooler , Asrock RX 580 8gb ,
32gig DDR4RAM, 27" IPS 75hz screen with ATS, Insurgency, Splitgate
I get FPS 79-86-106-135 in town/highway/pickup areas in ATS
With using Vsync it locks to 75fps
(or should do 90hz if you got one of the asian freesync screens)
I would recommend
Question:
Have you or a good mate got a spare PSU ?
Have you or a good mate got a spare video card to test ?
Have you or a good mate got a spare Mobo to test ?
Have you or a good mate got a spare RAM stick to test
Are you using a single stick or duel kit of RAM ?
Can you change drivers ?
Have you tested games on a different hdd/ssd ?
Have you got Mangohud installed
Do you disable/turn off
Do you play at 1080p HIGH or ULTRA
Do you use XFCE with CSD
or the XFCE classic without CSD ? (https://github.com/Xfce-Classic/ )
Do you still use pulsewire or removed it and now using pipwire
I am unsure what country you are located
Im going to reecommend
Seasonic and Silverston for PSU’s
I dont recommend Thermaltake/EVGA/Asus/Gigabyte for PSU
Check out local PC Store, Amazon USA or Aliexpress
New spare PSU I would recommend :-
Silverstone 500w bronze ET500-B USD$48 (Amazon USA)
https://www.amazon.com/SilverStone-Technology-Bronze-Cables-ET550-B/dp/B071HHSY2M/
Gigabyte B450 ryzen mobo USD$82 (amazon USA)
https://www.amazon.com/GIGABYTE-B450M-DS3H-Ryzen-Motherboard/dp/B07FWVJSHC/
Crucial 250 gig SSD USD$38 (Amazon USA)
https://www.amazon.com/dp/B07G3YNLJB/
genetic 16 gig DDR4 USD$59 (Amazon USA)
https://www.amazon.com/TEAMGROUP-T-Force-Vulcan-3200MHz-Desktop/dp/B07T637L7T/
Also if your mobo is under 12-3 years
check your warranty status
and see what steps are needed
to RA (free replacement under warranty)
in your town/district/county
Having a spare 500w PSU and 8 gig stick stick of RAM comes in handy
to dianouse and repair your system and friends/family systems
and its good to have a reference , what works
I also record ETS2/ATS , splitgate and other games with OBS
and manage to get 1080p 30fps while still doing 75-60fps using OBS on CPU software mode
(its never managed to offer AMD VCE/hardware encoding in Linux OBS for years for me)
OBS set to 2755Kbps/Software/160 saving on OS NVME, game loading off 2.5" SSD
recording to 1080p 30fps
My latest ATS video which is UNCENSORED, with man speak and swearing, watch at your own risk
Best of luck sorting it out
Have you tried amdvlk instead of vulkan-radeon?
Yes, you can make picom (compton) xfce’s compositor like so;
Here’s an example config you can use;
https://raw.githubusercontent.com/endeavouros-team/endeavouros-i3wm-setup/main/.config/picom.conf
Find these lines and change their values;
vsync = true;
unredir-if-possible = true;
If you haven’t already, consider installing gamemode.
Some distributions include it by default, EOS doesn’t.
pacman -S gamemode
Also, if you’re launching games with mangohud, capping your framerate is a good idea.
This has several benefits, like better frame-time consistency and less load on the GPU overall.
Copy the example config file to your home directory;
cp -v /usr/share/doc/mangohud/MangoHud.conf.example ~/.config/MangoHud/MangoHud.conf
In MangoHud.conf add or edit these values accordingly;
#replace with desired fps cap
fps_limit=60
#optionally hide the overlay
no_display
Hey. Sorry for the late response.
I was getting frustrated with my low performance and felt like giving up, because even with the suggestions here (as well as overclocking my GPU with the tool/guide KDen recommended), I continued to get very subpar performance compared to what I should be getting. And, out of frustration and curiosity, I decided to try out Fedora, just to check if the issue was indeed with a poorly-pasted or malfunctioning GPU/PSU like some people were afraid it was, and if I was misremembering getting better performance on other distros like Mint.
Turns out it actually isn’t and I wasn’t - I’ve gotten way better performance on Fedora than I ever did on Endeavour. Take, for example, The Outer Worlds - I’m able to regularly get over 45 FPS on the overworld and can often push past 50 FPS, and on interior scenes I’m easily able to get stable 60 FPS:
Meanwhile for reference, on Endeavour I’d be lucky if I even managed to get past 35 FPS at all, and would often chug at below 30 FPS with frame stutters as low as 25 FPS. Additionally, as you can see, I also get much better GPU/CPU temperatures on Fedora compared to Endeavour; I’m often able to get sub-65°C temperatures and in the worst-case scenario only reach up to ~72°C, versus on Endeavour where my GPU would often push up to 90°C. And note that, unlike on Endeavour, I did not overclock my GPU on Fedora!
Because of all this, it’s pretty much safe to say that, somehow, Endeavour isn’t playing nice with my hardware because it presents severe performance and heating issues that simply aren’t present on both Fedora and Linux Mint. I’m guessing it may be because, as nadb said, Arch/Endeavour doesn’t optimize anything OOTB and I would have to set it up myself? However, I find it weird that I’ve seen multiple people who use Arch/Endeavour and had no issues with performance despite using it completely OOTB.
What exactly should I do to get Endeavour to give me actually good performance? Are there any useful guides in setting up Arch/Endeavour to be optimized for gaming? And, if I configure and tweak it myself, would I be able to get even better GPU/CPU performance than I do on Fedora and Linux Mint?
Yes, I have, and amdvlk actually performed worse than vulkan-radeon.
Just how much of a performance boost does picom offer? And is it necessary even on Cinnamon?
Admittedly, I did try out another DE on Fedora - I returned to Cinnamon like I used on Linux Mint (though I also tried out KDE Plasma, which also ran quite well), so it might be possible that my better performance may owe to Cinnamon’s compositor being better than XFCE’s. However, I’m still getting better performance than I did on XFCE even when I had disabled its compositor, not to mention how I’m not dealing with my GPU overheating like crazy anymore either, which has me confused as to what is going on.
I actually already had done both of these, I learned to do it since my Mint days ^^’
I have no idea how the DE impacts gaming performance but why not give KDE a try on EOS, maybe even running Wayland?
I may have missed it in the 30+ posts… But if it works on fedora I assume you used gnome Wayland? Perhaps worth a shot on eos.
I’ve tried KDE Plasma twice (once on Endeavour, another on Fedora), and I disliked it and couldn’t adapt to it both times, sadly. 
Actually, I used KDE on Wayland as I don’t like GNOME, either. I switched to Cinnamon afterward and performance is slightly worse, but still better than XFCE. I’m still trying to find the ideal DE for me, honestly ^^’
I should try Cinnamon on Endeavour, but I’m worried about it once again not performing well. I’ve done so much distrohopping on December that I’m concerned about my SSD’s health ^^’
That is fair but note that Wayland has much better support in gnome. I have not tried on kde but read in the forum that it still has experimental features.
I did that a lot in 2020, and 2021 stick to eos and started DE hopping. I ended up on wm i3 and qtile.
For gaming I do not know, I have a razor laptop with Nvidia but only run Linux native games that seem to work properly.
Yes, that is true. Wayland on KDE was absurdly unstable and I’ve had Steam and multiple games just crash on me five times within a single day. KDE was also forcing itself to use Wayland instead of X, too, for some reason. Cinnamon has been much more stable.
I’d use GNOME since I heard it has the best gaming performance on Wayland (and possibly out of all DEs), but I’ve had a horrible experience using GNOME on my first-ever distro (Pop!_OS) because I couldn’t adapt to its workflow at all, so I’m worried I might have a bad experience with it yet again. There are gnome extensions that patch it to have a workflow more adapted to mine (like Desktop Icons and Dash-to-Panel), but I’m not sure how well DtP actually works regarding usability and the thought of having to rely on third-party hacks to get basic functionality doesn’t really appeal to me…
Anyway, it’s indeed quite strange that you get way better performance on both, Mint & Fedora. So I think it’s neither the kernel nor the display server. I also don’t think it’s the DE. Never heard of Cinnamon beeing somehow optimized for gaming.
Since you also mentioned the high temperatures on EOS, my guess is on the drivers. Did you compare driver versions between EOS and Fedora?
I had good experience on gnome 41, but I didn’t use any extensions. but workflow is different and Linux you have the freedom of choice. So it’s important to use something you feel comfortable with. But don’t think it really has to do with Wayland vs xorg, the problem is likely driver related in the first place or need additional packages to enhance gaming I assume.
If Fedora is working better for you, don’t feel bad for switching.
I don’t think it’s a driver issue; I checked with inxi -Ga, and it seems both distros use rather similar drivers:
Here’s my full inxi -Ga on Fedora, if it means anything:
Graphics:
Device-1: AMD Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] vendor: Tul
driver: amdgpu v: kernel bus-ID: 08:00.0 chip-ID: 1002:67df class-ID: 0300
Display: x11 server: X.Org 1.20.14 driver: loaded: amdgpu,ati
unloaded: fbdev,modesetting,vesa display-ID: :0 screens: 1
Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.0x11.2")
s-diag: 582mm (22.9")
Monitor-1: HDMI-A-0 res: 1920x1080 hz: 60 dpi: 102 size: 480x270mm (18.9x10.6")
diag: 551mm (21.7")
OpenGL: renderer: AMD Radeon RX 570 Series (POLARIS10 DRM 3.42.0
5.14.10-300.fc35.x86_64 LLVM 13.0.0)
v: 4.6 Mesa 21.3.3 direct render: Yes
I’ve included my inxi -Ga from Endeavour in the first post of this thread. As you can see, the drivers are almost identical between the two, with only a very minor difference with the Mesa drivers. I highly doubt it’s the cause of such severe performance issues. Maybe I’m missing or forgetting another driver?
Regarding additional packages, I installed gamemode and set up mangohud to cap my framerate to 60 FPS as I mentioned before, so I don’t think it’s that - unless, of course, I’m also forgetting something again.
Oh, true, true. Issue is, I… don’t know if I’m adapting too well to Fedora. While it easily works, I did deal with issues on it as well (including the same wifi issue I had on Endeavour; seems like only Linux Mint likes my antenna), and I don’t feel like I have as much control over Fedora as I did with Arch/Endeavour, especially when it comes to kernel management. Plus, I came to really like and practically fell in love with pacman, and dnf isn’t as good in my experience. So I’d really want to come back honestly, I just don’t want to do it while I haven’t figured out and solved why Endeavour just so virulently despises my GPU…
Sorry, out of ideas here 
Ppl here are usually quick and eager to help, so I’m afraid nobody here knows what causes those problems. I would suggest asking on the Arch forums, maybe someone there has a solution.